X-Virus-Scanned: clean according to Sophos on Logan.com X-PolluStop-Diagnostic: (direct reply)\eX-PolluStop-Score: 0.00\eX-PolluStop: Scanned with Niversoft PolluStop 2.1 RC1, http://www.niversoft.com/pollustop Return-Path: Received: from imf20aec.mail.bellsouth.net ([205.152.59.68] verified) by logan.com (CommuniGate Pro SMTP 4.3c4) with ESMTP id 864452 for flyrotary@lancaironline.net; Sun, 10 Apr 2005 22:57:36 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.68; envelope-from=sqpilot@bellsouth.net Received: from paul ([216.78.114.84]) by imf20aec.mail.bellsouth.net (InterMail vM.5.01.06.11 201-253-122-130-111-20040605) with SMTP id <20050411025434.ZPWX18830.imf20aec.mail.bellsouth.net@paul> for ; Sun, 10 Apr 2005 22:54:34 -0400 Message-ID: <002501c53ec7$eed6dd80$54724ed8@paul> From: To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: SQ2000 flying again Date: Mon, 11 Apr 2005 13:54:46 -0500 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01C53E9E.055D6990" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2180 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2900.2180 This is a multi-part message in MIME format. ------=_NextPart_000_0022_01C53E9E.055D6990 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi, Tracy....thanks for the heads up....any more info would be = appreciated....was it a long scat tube, and was it 3 inch diameter? I = assume you could not ingest enough air? Thanks for any more info you = can provide. Paul Conner ----- Original Message -----=20 From: Tracy Crook=20 To: Rotary motors in aircraft=20 Sent: Monday, April 11, 2005 8:34 PM Subject: [FlyRotary] Re: SQ2000 flying again You have exactly described the first intake scheme I tried on the = Renesis (NACA, Scat tube, etc). Hope it works better for you than it = did for me.=20 Tracy (following the various sagas from SnF) Hi, Kelly...mostly due to the ram air scoop's location. The intake = plenum would be very difficult to construct to end up at the very large = ram air intake scoop. Much easier to seal it off and install either a = NACA or a ram air intake on the bottom of the bottom cowling extension = and just use a 3 inch hose. The NACA duct comes preformed with a 3 inch = outlet for a hose, and I just ordered an aluminum flange for a 3 inch = hose to attach to the throttlebody plenum. I can install the whole thing = in a weekend with all these pre-cabbed parts. Paul, just call me lazy, = Conner ----- Original Message -----=20 From: Kelly Troyer=20 To: Rotary motors in aircraft=20 Sent: Sunday, April 10, 2005 7:53 PM Subject: [FlyRotary] Re: SQ2000 flying again Paul, May I ask why not retain the ram air scoop and seal it to the intake plenum thereby keeping the manifold pressure increase that it gives you at speed ?? -- Kelly Troyer=20 Dyke Delta/13B/RD1C/EC2=20 -------------- Original message from "Paul" = : --------------=20 Hi, John....the only thing you are missing is that I used to be = able to cool down in the climb. Now, at the same throttle setting, I can = not. Only addition has been the ram air scoop dumping air in the = vicinity of the throttlebody. (High pressure air being forced into a low = pressure area of the cowling). I believe that is hindering the ability = of the air to enter the NACA duct and go through the radiator. Paul = Conner ----- Original Message -----=20 From: John Slade=20 To: Rotary motors in aircraft=20 Sent: Sunday, April 10, 2005 6:45 AM Subject: [FlyRotary] Re: SQ2000 flying again Great Paul, but what's wrong with those temps and what are = your targets? Obviously the temps are going to be a bit higher if you're = producing more power. I remember Leon saying that the most efficient = operating temp, at least for a 3rd gen REW, was around 180F. 220F was, = I'm pretty sure he said, the red line and you don't want to be there for = long. If you can cruise at 190 at, presumably, fairly low altitude then = I'd say you're about right and you'll get 180 on a high altitude cruise. Am I missing something here? John I flew the SQ2000 today. The engine is running great, now = that I have a seperate water temp sender for the ECU and another for the = engine monitor. The outside air temp was 80 degrees, and I am very = disappointed with my coolant temps. The water temp hit 205 during the = climb. Temps slowly came back down to 190 once I was in level flight, = and dropped to 170 on short final. Very disappointing. (oil temps were = fine). I am going to seal all the gaps around the radiator first, and = see if that helps. I am concerned that the new ram air scoop I made to = bring in cool air to the throttlebody might be pressurizing the rear of = the cowling, and inhibiting the induction of air through the radiator. I = will try sealing around the radiator first. If that fails to bring the = temps down, I will try removing the ram air scoop and installing a NACA = scoop with a hose to bring air directly to the throttlebody, and not = dump it into the low pressure area of the cowling. If that fails, I = think I will take up fishing or golf. Paul Conner, 13b powered SQ2000 in Mobile, AL ---------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG Anti-Virus. Version: 7.0.308 / Virus Database: 266.9.5 - Release Date: = 4/7/2005 ------=_NextPart_000_0022_01C53E9E.055D6990 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi, Tracy....thanks for the heads up....any more = info=20 would be appreciated....was it a long scat tube, and was it 3 inch=20 diameter?  I assume you could not ingest enough air?  Thanks = for any=20 more info you can provide.  Paul Conner
----- Original Message -----
From:=20 Tracy = Crook
Sent: Monday, April 11, 2005 = 8:34=20 PM
Subject: [FlyRotary] Re: SQ2000 = flying=20 again

You have exactly described the first intake scheme I tried on the = Renesis=20 (NACA, Scat tube, etc).  Hope it works better for you than it did = for=20 me. 
 
Tracy (following the various sagas from SnF)

Hi, Kelly...mostly due to the ram = air scoop's=20 location. The intake plenum would be very difficult to construct to = end up=20 at the very large ram air intake scoop. Much easier to seal it off = and=20 install either a NACA or a ram air intake on the bottom of the = bottom=20 cowling extension and just use a 3 inch hose. The NACA duct comes = preformed=20 with a 3 inch outlet for a hose, and I just ordered an aluminum = flange for a=20 3 inch hose to attach to the throttlebody plenum. I can install = the=20 whole thing in a weekend with all these pre-cabbed parts. Paul, just = call me=20 lazy, Conner
 
----- Original Message ----- =
From:=20 Kelly=20 Troyer
To: Rotary motors in = aircraft=20
Sent: Sunday, April 10, = 2005 7:53=20 PM
Subject: [FlyRotary] Re: = SQ2000=20 flying again

Paul,
   May I ask why not retain the ram air scoop and = seal it=20 to the
intake plenum thereby keeping the manifold pressure = increase
that it gives you at speed ??
--
Kelly Troyer
Dyke=20 Delta/13B/RD1C/EC2




--------------=20 Original message from "Paul" <sqpilot@bellsouth.net>:=20 --------------

Hi, John....the only thing you = are missing=20 is that I used to be able to cool down in the climb. Now, at the = same=20 throttle setting, I can not. Only addition has been the ram air = scoop=20 dumping air in the vicinity of the throttlebody. (High pressure = air=20 being forced into a low pressure area of the cowling). I believe = that is=20 hindering the ability of the air to enter the NACA duct and go = through=20 the radiator.  Paul Conner
 
----- Original Message ----- =
From:=20 John Slade
To: Rotary motors in=20 aircraft
Sent: Sunday, April 10, = 2005 6:45=20 AM
Subject: [FlyRotary] = Re: SQ2000=20 flying again

Great Paul, but what's wrong with those temps and = what are your=20 targets? Obviously the temps are going to be a bit higher if = you're=20 producing more power. I=20 remember Leon saying that the most efficient operating temp, = at least=20 for a 3rd gen REW, was around 180F.  220F was, I'm pretty = sure he=20 said, the red line and you don't want to be there for long.=20 If you can cruise at 190 at, = presumably, fairly=20 low altitude then I'd say you're about right and you'll get = 180 on a=20 high altitude cruise.
Am I missing something here?
John
 
 I flew the SQ2000 = today. The=20 engine is running great, now that I have a seperate water temp = sender=20 for the ECU and another for the engine monitor. The outside = air temp=20 was 80 degrees, and I am very disappointed with my coolant = temps. The=20 water temp hit 205 during the climb.  Temps slowly came = back down=20 to 190 once I was in level flight, and dropped to 170 on short = final.=20 Very disappointing. (oil temps were fine).  I am = going to=20 seal all the gaps around the radiator first, and see if that=20 helps.  I am concerned that the new ram air scoop I made = to bring=20 in cool air to the throttlebody might be pressurizing the rear = of the=20 cowling, and inhibiting the induction of air through the = radiator. I=20 will try sealing around the radiator first. If that fails to = bring the=20 temps down, I will try removing the ram air scoop and = installing a=20 NACA scoop with a hose to bring air directly to the = throttlebody, and=20 not dump it into the low pressure area of the cowling.  = If that=20 fails, I think I will take up fishing or = golf.
     = Paul Conner,=20 13b powered SQ2000 in Mobile, AL

No virus found in this incoming message.
Checked by = AVG=20 Anti-Virus.
Version: 7.0.308 / Virus Database: 266.9.5 - = Release=20 Date: = 4/7/2005
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